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- W2565280077 abstract "In-memory computing is emerging as a promising paradigm in commodity servers to accelerate data-intensive processing by striving to keep the entire dataset in DRAM. To address the tremendous pressure on the main memory system, discrete memory modules can be networked together to form a memory pool, enabled by recent trends towards richer memory interfaces (e.g. Hybrid Memory Cubes, or HMCs). Such an inter-memory network provides a scalable fabric to expand memory capacity, but still suffers from long multi-hop latency, limited bandwidth, and high power consumption — problems that will continue to exacerbate as the gap between interconnect and transistor performance grows. Moreover, inside each memory module, an intra-memory network (NoC) is typically employed to connect different memory partitions. Without careful design, the back-pressure inside the memory modules can further propagate to the inter-memory network to cause a performance bottleneck. To address these problems, we propose co-optimization of intra- and inter-memory network. First, we re-organize the intra-memory network structure, and provide a smart I/O interface to reuse the intra-memory NoC as the network switches for inter-memory communication, thus forming a unified memory network. Based on this architecture, we further optimize the inter-memory network for both high performance and lower energy, including a distance-aware selective compression scheme to drastically reduce communication burden, and a light-weight power-gating algorithm to turn off under-utilized links while guaranteeing a connected graph and deadlock-free routing. We develop an event-driven simulator to model our proposed architectures. Experiment results based on both synthetic traffic and real big-data workloads show that our unified memory network architecture can achieve 75.1% average memory access latency reduction and 22.1% total memory energy saving." @default.
- W2565280077 created "2017-01-06" @default.
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- W2565280077 date "2016-10-15" @default.
- W2565280077 modified "2023-09-23" @default.
- W2565280077 title "A unified memory network architecture for in-memory computing in commodity servers" @default.
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- W2565280077 doi "https://doi.org/10.5555/3195638.3195673" @default.
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